What is exactly the difference between the Mazda 80W-90 gear oil vs the Long Life Hypoid Gear Oil for CX5's with AWD? It's almost double the price per quart. Where can one find the Mazda Hypoid oil for less online?
If you work with motorcycles or perform your own transmission fluid changes, you will have been introduced to gear oil and specifically hypoid oil at some point in your mechanical learning. That said, most people have no idea what hypoid oil is, much less what it is used for.
"To cope with the sliding action and heavy work loads for hypoid gears, high-pressure gear oil is necessary to reduce the friction, heat and wear on hypoid gears. This is particularly true when used in vehicle gearboxes. Care should be taken if the gearing contains copper, as some high-pressure lubricant additives erode copper. "